383649641 has 2 divisors, whose sum is σ = 383649642. Its totient is φ = 383649640.

The previous prime is 383649631. The next prime is 383649697. The reversal of 383649641 is 146946383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316982416 + 66667225 = 17804^2 + 8165^2 .

It is a cyclic number.

It is not a de Polignac number, because 383649641 - 2¹⁸ = 383387497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 383649592 and 383649601.

It is not a weakly prime, because it can be changed into another prime (383649631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191824820 + 191824821.

It is an arithmetic number, because the mean of its divisors is an integer number (191824821).

Almost surely, 2^383649641 is an apocalyptic number.

It is an amenable number.

383649641 is a deficient number, since it is larger than the sum of its proper divisors (1).

383649641 is an equidigital number, since it uses as much as digits as its factorization.

383649641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 383649641 is about 19586.9763108041. The cubic root of 383649641 is about 726.6271127317.

The spelling of 383649641 in words is "three hundred eighty-three million, six hundred forty-nine thousand, six hundred forty-one".